I think what Solar is saying is there is equipment without any clearly defined polarity. A double insulated tool without a polarized plug would be another example. Anything with a transformer, ballast or switching power supply would be another example.
The real problem is the white wire, only because it is white and switched.
In the case of the power tool the disconnecting means, the plug, disconnects both wires simultanously.
At the equipment end there is no difference
It does beg the question, what if both of the switched wires to the non-polarizerd equipment were run in a color other than white?
[This message has been edited by gfretwell (edited 10-18-2005).]
